<template>
  <!-- 外部链接icon -->
  <div v-if="isExternal" :style="styleExternalIcon" class="svg-external-icon svg-icon" />
  <!-- 内部icon -->
  <svg v-else :class="svgClass" aria-hidden="true" >
    <use :xlink:href="iconName" />
  </svg>
</template>
<script>
 export default {
   name:'SvgIcon'
 }
</script>
<script setup >
  import {defineProps, computed} from 'vue'
  import { isExternal as external } from '@/utils/validate'
  const props = defineProps({
    iconClass: {
      type: String,
      required: true
    },
    className: {
      type: String,
      default: ''
    }
  })
  const isExternal = computed(()=>external(props.iconClass))
  const iconName = computed(()=>`#icon-${props.iconClass}`)
  const svgClass = computed(()=>props.className ? 'svg-icon '+props.className:'svg-icon')
  const styleExternalIcon = computed(()=>{
    return {
      mask: `url(${props.iconClass}) no-repeat 50% 50%`,
      '-webkit-mask': `url(${props.iconClass}) no-repeat 50% 50%`
    }
  })
</script>

<style scoped>
.svg-icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  fill: currentColor;
  overflow: hidden;
}

.svg-external-icon {
  background-color: currentColor;
  mask-size: cover!important;
  display: inline-block;
}
</style>
